The cone bit is the most principal rock breaking tool in drilling engineering.The statistical analysis of field data shows that the early damage and failure of sliding bearing is one of the main reasons that affect the service life and performance of the cone bit kt196 torque converter in the real drilling process.Aiming at the complex working envi

The author of the article analysed the profile of Jewish identity and education, indicating some essential problems and describing the way they are being tackled today.As far as Jewish identity is concerned, Z.Gross distinguished and depicted two separate standpoints, thus establishing two kinds of identity: substantive and constructive.She also de

The article studies the history of creation and contents of topographic descriptions of the Lower Volga Region written in the 1770s - early 1800s.Topographic descriptions are a special form of scientific works aiming to comprehensively analyze the geography, natural surroundings, history and economy of a single governorate or province.In the last q

Androgen signaling, via receptor binding, is critical for regulating the physiological and morphological foundations of male-typical reproductive behavior in vertebrates.Muscles essential for male courtship behavior and copulation are highly sensitive to androgens.Differences in the distribution and density of the androgen receptor (AR) are importa

The genus Entomognathus contains at least 4o species, half in the Ethiopian and 30x24x24 wall cabinet in the Palaearctic, Nearctic, Oriental, and Neotropical regions (Leclercq, 1954, 1955, 1961, 1963; Nouvel and Ribaut, 1956; Krombein, 1963).Relatively little is known about the nesting behaviors, host preferences, or life histories of members of th